what's the difference between bash my_script and source my_script [duplicate]

Question

Both of two lines below seems to execute my_script. What's the difference between the two processes?

$ bash my_script
$ source my_script

muru · Accepted Answer · 2019-06-16 07:02:10Z

0

A major different is that bash runs in a subprocess, while source is as if you are running the content:

$ cat my_script
echo $$
$ bash my_script
85183
$ source my_script
1581
$ echo $$
1581

muru

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answered Jun 16, 2019 at 6:58

user358082

1

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